Improvement in ventilators



UNITED STATES PATENT OEEIoE..

GEORGE R. BARKER, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEM ENT IN VENTI LATO RS.

Specilication forming part of Letters Patent No. l] 1,718, dated February 14, 1871.

i, GEORGE n. BAEEEE, of nl@ @ay 0f P1111! N turc and Objects of the Intent/ion.

My invention relates to the combined ar rangement, in a building to be warmed by an air-heating furnace in the cellar or basement, of a flue within a flue, in such a manner that while the one flue operates as a free passageway for the heated air from the furnace to enter and ascend within the inhabited room above which is to be warmed thereby, the other flue. operates as a drain or free passage-way for the exit of the contaminated or impure air, which, cooling, descends toward the floor; the object of my invention being to aord a heated outletue with its mouth near the floor of the room, for more rapidly drawing of the cooled and contaminated or impure air of the inhabited room, while a constant supply of fresh warm air from the furnace below enters immedia-tely above the open mouth of the said outletfiue and ascends within the room. Thus the two said fines, operating together, warm and ventilate the said inhabited room in the most healthful and effectual manner; and, oc-

cupying no more space than either one of the two separate iiues heretofore required for the said two results, the cost of construction is proportionately less.

Description of the Accompany/ng Drawing.

Figure l is a sectional elevation of a room,

, showing a front view of my improvement applied. Fig. 2 is a vertical transverse section of the same on the left-hand side of the dotted line V W of Fig. 1.

General Description.

into a smaller register-opening, c', which is fixed directly below the hot-air-register opening a, its upper end passing, in an air-tight manner, through the stop-plate a', upward into that part offlue A which is above the plate a.

In the joint operation of that part of the hotair ue A which is below the stopplate a and the pipe C for the discharge of the impure air, it will be seen that the said pipe C will become and remain heated by the surrounding-hot air passing up from the usual furnace below, and that, consequently, a strong current of the descending air, kwhich in an inhabited [room necessarily becomes contaminated by the addition of carbonio acid and animal matter, and also deprived of its due proportion of oxygen, will pass out through the said pipe C, and thus allow continual accessions of the fresh hot air from below.

It will also be seen that, if it be desired, the rooms above may be steadily supplied with fresh warm air, and the subsequently contaminated portions carried out, as described, by simply extending the pipe O upward in the flue A accordingly, and adjusting inlet-)pipes to communicate between the said pipe G and respective register-openings made near the iioors for the discharge of the contaminated air, so as to operate in combination with respective register-openings directly above the latter, communicating with the flue A, divided into sections accordingly by stop-plates tted with adjustable valves or slides in the usual wellknown manner, for the purpose of letting the hot air into or stopping it olf from either of the stories of the building.

As a modicationof the combination of the hot-air-supply flue A and the impure air-discharge pipe C, the said pipe C may be extended downward into the hotair chamber of the furnace, and made to discharge the hot-airthrough the upper register-openings a', while the flue A, being heated thereby, will serve the purpose of carrying ott' the impure air to be admitted into it through respective registeropenings, like c', fixed directly below the hotair register-openin gs a, as shown in the drawing.

ln the modification the iiue A may also serve the purpose ot a smoke-flue from the furnace.

In either case the same chimney or main flue Aserves for both heating and Ventilating, the vitiated air in both cases escaping at or near the iioor of the room to be warmed, and the hot air entering at a point which is immediately above the said opening for the vitiated air, or, if desired, at any point between it and the ceiling.

I am aware that the saine main uc or chimney-shaft has been used simultaneously for heating and ventilating by admitting the hot air into the room at or near the oor and discharging the Vitiated air at or near the ceiling; therefore, I do not desire to claim broadly the use of the same main flue or chimney-shaft for heating and Ventilating; nor do I desire to claim the introduction of the hot air at or near the oor and the discharge of the vitiated air at or near the ceiling; but what I desire to secure by Letters Patent is confined to the following Claim.

GEO. It. BAKKER.

Witnesses:

BENJ. MoRrsoN WVM. H. MoRrsoN. 

